Relating soil salinity, clay content and water vapour sorption isotherms

Chen, Ming‐Yuan; Zeng, Wenzhi; Arthur, Emmanuel; Gaiser, Thomas; Lei, Guoqing; Ao, Chang; Fang, Yunmei; Wu, Jingwei; Huang, Jiesheng

doi:10.1111/ejss.12876

Cited by 5 publications

(3 citation statements)

References 46 publications

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“…The individual sorption isotherms are shown in Supplemental Figure S3. The distinct shape of both ad‐ and desorption isotherms of sample SQ could be explained by the salinity, that is, the relatively high EC compared with the other samples (Chen et al., 2020). The generally higher θ m throughout the whole RH range of sample QI‐3 could be attributed to the significantly higher clay content.…”

Section: Resultsmentioning

confidence: 99%

Physical characterization of glacial rock flours from fjord deposits in South Greenland–Toward soil amendment

Pesch

Weber

Møldrup

et al. 2022

Soil Science Soc of Amer J

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Greenlandic fjords contain vast amounts of glacially derived mineral material (glacial rock flour [GRF]), which may be used to amend structureless, low‐clay, and water‐repellent agricultural soils in South Greenland and elsewhere. In this study, we investigate key physical amendment properties of GRF from 16 different deposits in South Greenland. The clay‐sized fraction varied largely (range, 0.11–0.57 kg kg−1), and the particles were mostly angular. The specific surface area (SSA) determined by either ethylene glycol monomethyl ether (EGME, polar liquid) (range, 13.32–88.06 m2 g−1) or water‐vapor adsorption (range, 10.62–63.82 m2 g−1) agreed well (r = .90) and were comparable to kaolinitic‐clay dominated cultivated soils (KA‐soils) with clay content similar to the GRFs. The cation exchange capacities (CECs) (range, 4.25–21.91 cmol kg−1) were similar to or higher than those of the KA‐soils. The water content at the permanent wilting point (PWP) for the GRFs were considerably lower than those of the KA‐soils. The addition of 5% GRF to a sandy soil from Greenland showed a tendency (although not statistically significant) to increase plant available water (PAW). However, very high GRF addition (10 and 15%) significantly decreased the PAW. The specific surface charge (CEC/SSA) of the GRFs were higher than for comparable KA‐soils, suggesting a good soil amendment potential. The results from this study are valuable toward designing sustainable GRF amendment strategies, matching a given cultivated soil with the right amount and type of GRF.

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Section: Resultsmentioning

confidence: 99%

Physical characterization of glacial rock flours from fjord deposits in South Greenland–Toward soil amendment

Pesch

Weber

Møldrup

et al. 2022

Soil Science Soc of Amer J

Self Cite

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“…Excessively soluble salts and replaceable sodium contained in the saline soils are major problems associated with crop cultivation (Paz et al, 2019). Presently, soil salinity is a global problem (Chen et al, 2019;Hannan et al, 2020b). Therefore, preventing salinity is a key to improving plant productivity in sea belt regions of the gobe (Wang et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Green manure for soil salinity reclamation- A comprehensive review

IJ¹,

MN²,

Hannan³

et al. 2022

JAFE

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Large areas of the world are affected by high levels of soil salinity.Global warming causes a rapid rise of the sea level and enhancing new salt-affected areas inundating new agricultural land through saltwater intrusion. Salinity management through breeding strategies, land management or organic amendment could be wise strategies for salt management. Exogenous application of legumes as green manure can potentially reduce negative effects of soil salinity through growth improvement, ionic homeostasis via enhancing Ca/Na ratio in soil, adding organic matter, over expressing SOD, POD, CAT, APX, and lessening membrane leakage that upsurge crop productivity in saline environments. Such contribution to the sustainable agricultural systems is considered an alternate way towards enhancing crop cultivation in saline ecosystems. This review focused on the mechanisms of green manuring crops in soil salinity reclamation and subsequent contribution on crop growth and development.

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“…The individual sorption isotherms are shown in Supplemental Figure S3. The distinct shape of both ad-and desorption isotherms of sample SQ could be explained by the salinity, that is, the relatively high EC compared with the other samples (Chen et al, 2020). The generally higher θ m throughout the whole RH range of sample QI-3 could be attributed to the significantly higher clay content.…”

Section: Extended Physical Characterization Using Water Vapor Sorptionmentioning

confidence: 92%

Physical behaviour of Greenlandic rock flour, soils and rock flour amended soils: Particle, pore-network and mechanical properties

Pesch¹

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The dissertation is based on three papers (Paper I, Paper II and Paper III) and one submitted manuscript (Paper IV). All the papers were prepared in close cooperation with the Research Center Foulum.The contents and scientific findings of the papers are briefly discussed in the extended summary of this dissertation. Additionally, background information that could not be included in the papers will be presented. vii Lucian, Jesper, Claudia, Rupa, Fan, Rasmus, Sorin, and many more. I also would like to thank Annette who helped me during the final stages in the laboratory. Without the help and constant support during my studies from Robert, Liz and my family, especially my mother, I would not have been able to accomplish this dissertation. viii Contents Contents

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Relating soil salinity, clay content and water vapour sorption isotherms

Cited by 5 publications

References 46 publications

Physical characterization of glacial rock flours from fjord deposits in South Greenland–Toward soil amendment

Physical characterization of glacial rock flours from fjord deposits in South Greenland–Toward soil amendment

Green manure for soil salinity reclamation- A comprehensive review

Physical behaviour of Greenlandic rock flour, soils and rock flour amended soils: Particle, pore-network and mechanical properties

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